“马斯克”出的题目,数数你有几只腿
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$\sqrt{(-9)^{2}}$的值是多少?
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趣味数学题05 | 三角形求角度数问题
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趣味数学题04 | 三角形求角度数问题
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一眼出答案计算题
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基础几何题:三角形度数
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